Wong's Tips
Topic
Mathematics
Data-driven guides on Hong Kong maths education — from P1 number bonds to S3 algebra. Where the mistakes are, why they happen, and what actually fixes them.
The P3 Maths Mistakes You're Not Catching (And the Ones That Actually Matter)
Not all P3 maths errors are equal. Our data reveals which mistakes predict future struggle — and which ones you can safely ignore.
It's 9:15pm. Your son hands you a maths worksheet — 25 questions, mostly long multiplication. You scan the page: 18 correct, 7 wrong. Not terrible, not great. You circle the wrong answers, tell him to...
Wong SirWhat Your Child's Wrong Answers Are Trying to Tell You
Wrong answers aren't random — they're diagnostic. Here's how to read specific error patterns as a map of your child's mathematical thinking.
A mother messaged me last week with a photo of her P4 son's maths test. "He got 62%," she wrote. "He's terrible at maths." I looked at the paper for about thirty seconds and messaged back: "He's not t...
Wong SirThe Calculator Debate: When Should HK Students Start Using One?
Hong Kong delays calculator use longer than most countries. Here's what the data says about the pros, cons, and what you should do at home.
It's Saturday morning at a tutorial centre in Mong Kok. A P5 student is working through a practice paper. She reaches a question: 4,872 divided by 24. She stares at it. She tries long division. She ge...
Wong SirMore in Mathematics
Why 'Show Your Working' Is the Most Important Maths Habit
Wong Sir5 JanFractions: The Topic Where P4 Maths Gets Real
Wong Sir13 DecMultiplication Tables: Drill, Understand, or Both?
Wong Sir24 NovWord Problems Aren't a Maths Problem — They're a Reading Problem
Wong Sir5 NovPlace Value: The P2 Concept That Secretly Controls P5 Maths
Wong Sir18 OctWhy Your Child Gets Maths Right in Class But Wrong at Home
Wong Sir1 OctBuilding P2 Number Sense: 10 Activities That Take Under 10 Minutes
Wong Sir17 AprMoney and Shopping Word Problems: Using Real-World Context to Make Maths Click
Wong Sir3 AprAngles and Triangles in P5: The Top 5 Errors That Lose Marks Every Exam
Wong Sir20 MarMaths Anxiety in Primary School: The Signs Teachers See Before Parents Notice
Wong Sir20 FebHow to Check Maths Homework Without Doing It for Your Child
Wong Sir6 FebDecimals in P4: The Three Misconceptions Every Teacher Sees
Wong Sir23 JanThe Word Problem Reading Trap: Why Strong Maths Students Fail on Language, Not Numbers
Wong Sir9 JanMaths Board Games and Card Games: 12 That Actually Build Number Sense
Wong Sir26 DecSummer Maths Enrichment Programmes: What the Research Says vs What HK Parents Believe
Wong Sir12 DecThe Times Tables War: What Finally Worked in Our House (After Everything Else Failed)
Tiger Ma5 DecThe Calculator Debate in HK Primary Schools: When It Helps and When It Hurts
Wong Sir28 NovWhat AI Maths Grading Actually Catches That Human Markers Miss (From 50,000 Submissions)
Wong Sir14 NovDSE Maths M1 vs M2: Who Should Actually Take Extended Maths (And Who Is Taking It for the Wrong Reasons)
Mrs. Lau30 OctPattern Recognition and Sequences in P4: Building the Mathematical Eye
Wong Sir17 OctI Gave My Child My Maths Anxiety. Here Is How I'm Trying to Undo That.
Tiger Ma10 OctMy Child Knew Their Times Tables Last Month — Why Did They Forget Again?
Wong Sir3 OctInternational School Maths vs. Local Curriculum Maths: What I See Teaching in Both Worlds
Miss Yang26 SeptVolume and Surface Area in P6: The Conceptual Gap That Sinks Exam Marks
Wong Sir19 SeptWhen Maths Fear Escalates to School Refusal: What I See in My Practice
Miss Fu14 SeptNegative Numbers: When and How to Introduce Them Before the Curriculum Does
Wong Sir5 SeptHKMO Primary Maths Olympiad: Is It Worth the Stress for Average Students?
Wong Sir22 AugMy Daughter Hated Maths. These Are the Five Things That Actually Helped.
Tiger Ma15 AugRatio and Proportion in P6: The Step-by-Step Guide That Actually Makes Sense
Wong Sir8 AugSolid Shapes and Nets in P5: Why Most Children Can't Visualise in 3D (And How to Fix It)
Wong Sir25 JulEstimation: The Maths Skill HK Students Are Almost Never Taught
Wong Sir11 JulData Handling and Charts in P4-P5: The Low-Hanging Marks HK Students Miss
Wong Sir27 JunMaths Apps That Actually Work: A Teacher's Tested Review of 12 Popular Options
Mr. Ng24 JunDSE Maths Core: The Mistakes I Saw in 10 Years of Marking That Students Could Easily Avoid
Mrs. Lau22 JunMaths Homework Was Destroying My Relationship With My Son
Tiger Ma20 JunP3 Long Multiplication and Division: The Procedural Cliff Most Children Fall Off
Wong Sir13 JunAlgebraic Thinking Before Formal Algebra: What P4-P5 Students Need to Build First
Wong Sir30 MayThe Abacus, Mental Maths, and the Chinese Mathematical Tradition
Miss Yang22 MayPlay Therapy Techniques That Build Number Confidence in Young Children
Miss Fu18 MayPercentages and Decimals: Why Teaching the Connection Early Changes Everything
Wong Sir16 MayP6 Maths Revision in the Final 3 Months: A Teacher's Week-by-Week Plan
Wong Sir2 MayWe've Spent HK$180,000 on Maths Tutoring. Was It Worth It?
Tiger Ma24 AprThe Bar Model Method for Word Problems: Why Singapore Does It Right and HK Is Catching Up
Wong Sir18 AprWhat Changed in the 2023 HK Primary Maths Curriculum Update (And What Parents Should Know)
Wong Sir4 AprNumber Bonds: The Invisible Foundation That Determines P1-P2 Maths Confidence
Wong Sir21 MarThe 8 Most Common 'Careless' Maths Mistakes in HK Primary Exams (And Why They're Not Careless at All)
Wong Sir7 MarGeometry Visualisation: Hands-On Activities to Build Spatial Thinking at Home
Wong Sir21 FebI Have a Finance Degree and I Cannot Do My Son's P5 Maths Homework
Tiger Ma8 FebP5 Speed-Distance-Time Problems: The Systematic Approach That Stops Careless Errors
Wong Sir7 FebMental Maths vs Written Methods: What HK Students Are Taught vs What Sticks
Wong Sir24 JanHow Mainland China Teaches Maths Differently — and What Hong Kong Could Learn
Miss Yang19 JanYour Child's Relationship With Maths Is an Emotional One First
Miss Fu14 JanWhy HK Students Struggle With Fractions: The Part-Whole Confusion
Wong Sir10 Jan